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Epoxy anticorrosion powder coating for reinforcing bars and bridge strand

  • Commodity name： Epoxy anticorrosion powder coating for reinforcing bars and bridge strand

Product Category

Pure epoxy anticorrosive

Email:

tedluo@163.com

Tel:

86-13801790539

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  • Product Description
  • Product Features
    1. Excellent adhesion to the substrate.
    2. The coating is dense, continuous, bright, anti-permeable, and has few pinholes.
    3. The coating has excellent cathodic disbondment resistance and high electrical insulation.
    4. High bonding strength and strong grip between the coating and concrete.
    5. Good toughness, will not crack when bent.
    6. Low melting temperature, high reactivity, high curing completion rate, and good mechanical properties.
    7. Strong versatility and low powder consumption.
    8. Reduce or avoid wire drawing phenomenon in steel bar powder spraying.
    Epoxy Powder Performance Parameters

    Item

    Quality Index

    Test Method

    Test Results

    Appearance

    Uniform color, no agglomeration

    Visual Inspection

    Qualified

    Density (g/cm³ )

    1.2-1.5

    GB/T 4472

    1.3±0.05

    Volatile Matter Content (%)

    ≤ 0.6

    GB/T 6554

    0.1
    Cured Powder Coating Performance Parameters

    Serial Number

    Test Item

    Technical Index

    Test Method

    Test Results

    1

    Appearance

    Smooth, continuous, no bubbles, no cracks or shrinkage

    Visual Inspection

    Qualified

    2

    Cathodic Disbondment Resistance

    ≤4mm

    GB/T 25826-2010
    SY/T0315-2005C

    Qualified

    3

    Continuity

    No holes, gaps, cracks or visually visible defects

    GB/T 25826-2010

    Qualified

    4

    Bendability (40mm)

    No visible cracks, breaks, or coating delamination

    GB/T 25826-2010

    Qualified

    5

    Bonding Strength

    The bonding strength of the coated steel bar is not less than 85% of that of the uncoated steel bar

    GB50152

    Qualified

    6

    Impact Strength

    No coating material fragmentation

    GB/T 25826-2010

    Qualified

    7

    Chloride Ion Permeability

    ＜1×10-4M

    GB/T 25826-2010

    Qualified

    8

    Chemical Corrosion Resistance

    No softening, no bubbling, good adhesion, no micropores, no depressions

    GB/T 25826-2010

    Qualified

    9

    Abrasion Resistance

    ≤100 mg

    GB/T 1768-1979

    Qualified

    10

    Salt Spray Test (800h)

    ≤3mm

    GB/T 25826-2010

    Qualified

    Implementation Standards: JG 3042-1997; GB/T 25826-2010;
    Application Areas: Widely used in bridges, ports, airports, buildings, basements, high-speed railways, etc.
    Applicable Process: Electrostatic Spraying
    Precautions:
    　　1. Remove the oxide scale from the surface of the steel bar to reveal the original metal color; the surface roughness of the steel bar must meet the standard, preferably 50-70mm; the derusting grade reaches Sa2 1/2 (GB/T8923), and there are no chlorides or other attachments on the surface of the steel bar. Preheat: The temperature should be controlled at 220-245℃.
    　　2. The product should be stored in a ventilated, dry room with a temperature below 27℃, away from heat sources, corrosive chemicals and chemical solvents, and avoid strong light; the maximum stacking height should not exceed 4 layers; avoid long-term pressure, ensure that the packaging box is sealed to prevent agglomeration and moisture, affecting the fluidization performance.
    　　3. Because this product has extremely high reactivity, it is recommended that the storage period be within 3 months at 27℃. If used beyond the storage period, its performance needs to be verified in advance.
     

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Hubei Weiyang Polymer Material Co., Ltd.

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